diff --git a/uint16.h b/uint16.h
index 091e51a..605f85e 100644
--- a/uint16.h
+++ b/uint16.h
@@ -2,7 +2,8 @@
 #ifndef UINT16_H
 #define UINT16_H
 
-#include <inttypes.h>
+#include <inttypes.h>	// uint16_t, int16_t
+#include <stddef.h>	// size_t
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,6 +59,28 @@ uint16 uint16_read_big(const char *in);
 
 #endif
 
+static inline size_t fmt_uint16(char* out, uint16 in) {
+  if (out) uint16_pack(out,in);
+  return 2;
+}
+
+static inline size_t fmt_uint16_big(char* out, uint16 in) {
+  if (out) uint16_pack_big(out,in);
+  return 2;
+}
+
+static inline size_t scan_uint16(const char* in, size_t len, uint16_t* b) {
+  if (len<2) return 0;
+  *b = uint16_read(in);
+  return 2;
+}
+
+static inline size_t scan_uint16_big(const char* in, size_t len, uint16_t* b) {
+  if (len<2) return 0;
+  *b = uint16_read_big(in);
+  return 2;
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/uint32.h b/uint32.h
index fb94f0e..cffa72c 100644
--- a/uint32.h
+++ b/uint32.h
@@ -2,7 +2,8 @@
 #ifndef UINT32_H
 #define UINT32_H
 
-#include <inttypes.h>
+#include <inttypes.h>	// uint32_t, int32_t
+#include <stddef.h>	// size_t
 
 #ifdef __cplusplus
 extern "C" {
@@ -58,6 +59,28 @@ uint32 uint32_read_big(const char *in);
 
 #endif
 
+static inline size_t fmt_uint32(char* out, uint32 in) {
+  if (out) uint32_pack(out,in);
+  return 4;
+}
+
+static inline size_t fmt_uint32_big(char* out, uint32 in) {
+  if (out) uint32_pack_big(out,in);
+  return 4;
+}
+
+static inline size_t scan_uint32(const char* in, size_t len, uint32_t* b) {
+  if (len<4) return 0;
+  *b = uint32_read(in);
+  return 4;
+}
+
+static inline size_t scan_uint32_big(const char* in, size_t len, uint32_t* b) {
+  if (len<4) return 0;
+  *b = uint32_read_big(in);
+  return 4;
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/uint64.h b/uint64.h
index fef8c54..d2cdcde 100644
--- a/uint64.h
+++ b/uint64.h
@@ -2,7 +2,8 @@
 #ifndef UINT64_H
 #define UINT64_H
 
-#include <inttypes.h>
+#include <inttypes.h>	// uint64_t, int64_t
+#include <stddef.h>	// size_t
 
 #ifdef __cplusplus
 extern "C" {
@@ -29,6 +30,28 @@ uint64 uint64_read_big(const char *in);
 
 #endif
 
+static inline size_t fmt_uint64(char* out, uint64 in) {
+  if (out) uint64_pack(out,in);
+  return 8;
+}
+
+static inline size_t fmt_uint64_big(char* out, uint64 in) {
+  if (out) uint64_pack_big(out,in);
+  return 8;
+}
+
+static inline size_t scan_uint64(const char* in, size_t len, uint64_t* b) {
+  if (len<8) return 0;
+  *b = uint64_read(in);
+  return 8;
+}
+
+static inline size_t scan_uint64_big(const char* in, size_t len, uint64_t* b) {
+  if (len<8) return 0;
+  *b = uint64_read_big(in);
+  return 8;
+}
+
 #ifdef __cplusplus
 }
 #endif